Abstract
SPR detection technique is widely applied in biology, chemistry and other fields. Usually the unknown sample is liquid, so automatic sampling control system is an important part of SPR spectrometer. This paper introduces an automatic sampling control system design as the core of microcontroller and step motor, of which the main function is to control the volume and speed of trace liquid sample according to the parameters set by operators via user interface based on LabVIEW software. The test results show that the system has the advantages of convenient operation, high intelligence, high accuracy and so on, compared with the traditional instruments.
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